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\usepackage{epsfig}
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\title{Automated modeling in \\qualitative reasoning}



\author{Hylke Buisman}


\institute[University of Amsterdam] % (optional, but mostly needed)
{
  BSc. Artificial Intelligence\\
  University of Amsterdam
}


\date{\today}

\renewcommand{\emph}[1]{\textcolor{blue}{#1}}





\begin{document}


% Een korte statement van waar we het over hebben
% Voorbeeld -> automatiseren (nuttig zoals zal blijken)
\frame{\titlepage} 



\frame<article:1| beamer:0>[label=hidden1]
{
\tableofcontents[currentsection]
}


\section{Introduction}
\subsection{Conceptual knowledge}


% Weinig zeggen, hoogstens kort noemen
\frame
{
\frametitle{Overview}

\begin{enumerate}
	\item Automated model building
	\bigskip
	\item Preliminaries
	\bigskip
	\item Algorithm
	\bigskip
	\item Results
	\bigskip
	\item Conclusion
\end{enumerate}

}


\frame
{
\frametitle{Qualitative automated model building}


\emph{Automated modeling}
\begin{itemize}
\item model the underlying system of a given input \emph{behavior}
\end{itemize}

\bigskip

\emph{Qualitative aspects}
\begin{itemize}
\item \emph{discrete} magnitudes and derivatives
\item working with (in)equality information
\end{itemize}

\bigskip

\emph{Motivation}
\begin{itemize}
\item simplify modeling for experts
\item making agents that `understand' their environment
\end{itemize}



}

\frame
{
\frametitle{Example}
\begin{center}

\end{center}


\begin{columns}[C]
 \column{.4\textwidth}
 \begin{center}
 \includegraphics[scale=0.4]{treeSG.eps}\\ \medskip
 {\huge{+}}\\\medskip
  \includegraphics[scale=0.4]{treeVH.eps}
  \end{center}
 \column{.1\textwidth}
 {\Huge{$\Rightarrow$}}
 \column[c]{.5\textwidth}
	\includegraphics[width=1.0\textwidth]{tree.eps}
\end{columns}


}

\section{Algorithm}
\subsection{Algorithm detail 1}
\frame
{
\frametitle{Preliminaries}

\emph{Algorithm}
\begin{itemize}
	\item \emph{input:} all behaviors of the system, scenario % from existing models: easy testing
	\item \emph{assumption:} all magnitudes/derivatives known
\end{itemize}

\medskip

\emph{Minimal covering}
\begin{itemize}
	\item finding a \emph{minimal} set of dependencies\\ that \emph{covers} (`explains') the input
\end{itemize}

\medskip

\emph{Iterative approach}
\begin{itemize}
	\item 3 iterations
	\item each step handles more complex models
\end{itemize}
}


\frame
{
\frametitle{Algorithm}
\framesubtitle{Generating a naive model}

Using \emph{naive} (hold in all states) dependencies determine:
\begin{itemize}
	\item\emph{clusters} (e.g. tree's \emph{size \& shade}) % In short explain use of clusters
	\item generate \emph{causal orderings} for clusters
	\item \emph{combine} into a consistent (naive) model
\end{itemize}

\bigskip

If necessary \emph{initialize magnitudes} by adding:
\begin{itemize}
	\item (qualitative) addition/subtraction
	\item value assignments
\end{itemize}


}


\frame
{
\frametitle{Algorithm}
\framesubtitle{Identifying dependency interactions}

\begin{columns}[c]
 \column{.5\textwidth}
 \emph{Interactions}
 \column[c]{.5\textwidth}
 \includegraphics[scale=0.6]{interactions.eps}
\end{columns}

\bigskip

Consider all interactions
\begin{itemize}
	\item combine interactions to cover unexplained data
	\item reduce to minimal covering set
\end{itemize}

\bigskip

\emph{A work in progress}


}



\section{Results and discussion}
\subsection{Results: U-Tube}


% This slide is mainly for the idea I will not really twell anything about it.
\frame
{
\frametitle{Results: Naive dependencies \& calculus}

\begin{columns}[T]
 \column{.25\textwidth}
 
 \emph{Input}\\
 \bigskip
 \begin{center}
 \epsfxsize=1.0\textwidth
 \epsffile[9 10 550 265]{utube.eps}\\
 \end{center}
 
 \column[t]{.75\textwidth}
 \emph{Output}\\
 \begin{center}
		\includegraphics[width=1.0\textwidth]{generated.eps}
 \end{center}
\end{columns}

}


\frame
{
\frametitle{Results: Interactions}

\begin{columns}[c]
 \column{5cm}
 The interaction illustrated left is \emph{identified correctly}
 \column[c]{5cm}
 \includegraphics[scale=0.6]{interactions.eps}
\end{columns}
\bigskip\medskip\bigskip
Most parts of the model are not found, causes:
\begin{itemize}
	\item \emph{no clusters} are present
	\item presence of \emph{conditions} in the original model
\end{itemize}


}



\frame
{
\frametitle{Conclusion and discussion}

Automated model building algorithm \emph{for basic systems}

\bigskip\bigskip\bigskip


Next two weeks will be used to \emph{improve} algorithm
\begin{itemize}
	\item handling conditions
	\item (automated) model evaluation methods
\end{itemize}




}

\end{document}